Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 6555417728

Certificate GIA 6555417728

Diamond specifications and retailer prices

From $7,577 SGD

A$9,118 AUD

As of October 31, 2026

10 retailers carry this diamond

Most expensive: $12,937 SGD at NZ Jewellers · As of September 30, 2026

View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant 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 stated by the retailer rather than the lab and certified by GIA 6555417728. Listed at 10 retailers as of October 31, 2026. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

OriginNatural

Grading LabGIA

CertificateGIA 6555417728

Dimensions7.54 × 5.78 × 3.94 mm

L/W Ratio1.30

Girdle conditionPolished

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

CertificateGIA 6555417728

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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

Price History

Last verified: Oct 31

Current: $12,937 SGD|Low: $5,695 SGD|High: $13,835 SGD|Avg: $7,857 SGD|-6.5%

NZ Jewellers

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

September 30, 2026

Retailer 3$5,695 SGD

Retailer 10$5,893 SGD

Retailer 5$5,929 SGD

Retailer 15$6,167 SGD

Retailer 2$6,500 SGD

Retailer 9$6,554 SGD

Retailer 4$6,565 SGD

Retailer 11$6,756 SGD

Retailer 6$6,788 SGD

Retailer 7$6,813 SGD

Retailer 16$7,192 SGD

Retailer 13$7,325 SGD

Retailer 20$7,417 SGD

Retailer 12$7,577 SGD

Retailer 14$7,629 SGD

Retailer 18$8,279 SGD

Retailer 8$9,377 SGD

Retailer 17$11,534 SGD

Retailer 19$12,126 SGD

NZ Jewellers$12,937 SGD

14 data points across 20 retailers

10 retailers

Retailer 1

$5,695 SGD

HK$34,800 HKD

Price last confirmed 34 days ago

Retailer 2

$6,500 SGD

€4,843 EUR

View

Price last confirmed 32 days ago

Retailer 3

$6,788 SGD

$5,310 USD

View

Price last confirmed 33 days ago

Retailer 4

$7,325 SGD

£4,512 GBP

View

Price last confirmed 32 days ago

Retailer 5

$7,417 SGD

$5,802 USD

View

Price last confirmed 34 days ago

Retailer 6

$7,577 SGD

A$9,118 AUD

View

Retailer 7

$7,629 SGD

A$9,180 AUD

View

Price last confirmed 32 days ago

Retailer 8

$9,377 SGD

ZAR 118,495 ZAR

View

Price last confirmed 37 days ago

Retailer 9

$12,126 SGD

$9,485 USD

View

Price last confirmed 34 days ago

Most Expensive

NZ Jewellers

713935f0-ce7f-4697-ab11-385cbfb65944 · Sep 30

$12,937 SGD

$10,120 USD

View

Price last confirmed 32 days ago

9 more retailers have this diamond

Prices start from $7,577 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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