Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3415658160

Certificate GIA 3415658160

Diamond specifications and retailer prices

From $9,856 SGD

$7,710 USD

As of October 31, 2026

Save $16,256 SGD (62%) vs most expensive(unlock to see where)

27 retailers carry this diamond

Most expensive: $26,112 SGD at Diamond Quarter · As of October 31, 2026

View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3415658160. Listed at 27 retailers as of October 31, 2026, with prices from $9,856 to $26,112, a $16,256 spread on the same certified stone. Diamond Quarter lists it at $26,112. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51

Carat

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.5°

Pavilion angle41.4°

OriginNatural

Grading LabGIA

CertificateGIA 3415658160

Dimensions7.34 × 7.30 × 4.59 mm

L/W Ratio1.01

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 3415658160

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31

Current: $11,751 SGD|Low: $9,856 SGD|High: $19,907 SGD|Avg: $13,517 SGD|-15.1%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

Retailer 20

November 2, 2026

Retailer 6$9,856 SGD

Retailer 8$9,909 SGD

Retailer 4$10,222 SGD

Retailer 19$10,396 SGD

Retailer 9$10,526 SGD

Retailer 17$10,847 SGD

Retailer 7$10,918 SGD

Retailer 5$11,638 SGD

Retailer 1$11,751 SGD

Retailer 16$12,129 SGD

Retailer 20$12,220 SGD

Retailer 2$12,669 SGD

Retailer 10$12,669 SGD

Retailer 3$13,091 SGD

Retailer 18$13,247 SGD

Retailer 12$13,551 SGD

Retailer 13$13,854 SGD

Retailer 11$13,997 SGD

Retailer 15$16,040 SGD

Retailer 14$17,052 SGD

42 data points across 20 retailers

27 retailers$9,856 SGD to $26,112 SGD

Cheapest Retailer

$9,856 SGD

$7,710 USD

Retailer 2

$9,909 SGD

$7,751 USD

View

Retailer 3

$10,222 SGD

$7,996 USD

View

Retailer 4

$10,396 SGD

$8,132 USD

View

Retailer 5

$10,526 SGD

$8,234 USD

View

Retailer 6

$10,847 SGD

$8,485 USD

View

B+

Retailer 7

$10,918 SGD

$8,540 USD

View

Final sale: no returns

B+

Retailer 8

$11,638 SGD

$9,104 USD

View

B+

Retailer 9

$11,751 SGD

£7,238 GBP

View

B+

Retailer 10

$12,129 SGD

$9,488 USD

View

B+

Retailer 11

$12,220 SGD

$9,558 USD

View

Retailer 12

$12,594 SGD

$9,851 USD

View

Price last confirmed 17 days ago

B+

Retailer 13

$12,669 SGD

$9,910 USD

View

B+

Retailer 14

$12,669 SGD

$9,910 USD

View

B+

Retailer 15

$13,091 SGD

$10,240 USD

View

B+

Retailer 16

$13,247 SGD

$10,362 USD

View

B+

Retailer 17

$13,551 SGD

€10,095 EUR

View

Retailer 18

$13,643 SGD

$10,672 USD

View

Price last confirmed 10 days ago

Retailer 19

$13,854 SGD

$10,837 USD

View

Price last confirmed 10 days ago

Retailer 20

$13,997 SGD

A$16,844 AUD

View

Price last confirmed 29 days ago

Retailer 21

$14,032 SGD

$10,976 USD

View

Price last confirmed 18 days ago

Retailer 22

$15,742 SGD

$12,314 USD

View

Price last confirmed 12 days ago

B+

Retailer 23

$16,040 SGD

ZAR 202,693 ZAR

View

Retailer 24

$17,052 SGD

£10,503 GBP

View

Retailer 25

$20,990 SGD

$16,419 USD

View

Price last confirmed 12 days ago

Retailer 26

$24,910 SGD

£15,343 GBP

View

Most Expensive

Diamond Quarter

1.51SI1D34607BA3N · Oct 31

$26,112 SGD

£16,083 GBP

View

26 more retailers have this diamond

Prices start from $9,856 SGDSave up to $16,256 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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1.51ct Round

$9,856 SGD