Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566189059

Certificate GIA 2566189059

Diamond specifications and retailer prices

From $3,126 SGD

$2,445 USD

As of October 30, 2026

Save $4,928 SGD (61%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: $8,054 SGD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566189059. Listed at 22 retailers as of October 30, 2026, with prices from $3,126 to $8,054, a $4,928 spread on the same certified stone. NZ Jewellers lists it at $8,054. 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

1.00

Carat

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

Crown angle33°

Pavilion angle41.6°

OriginNatural

Grading LabGIA

CertificateGIA 2566189059

Dimensions6.41 × 6.44 × 3.96 mm

L/W Ratio1.00

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

CertificateGIA 2566189059

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

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

Price History

Last verified: Oct 30

Current: $8,054 SGD|Low: $2,500 SGD|High: $8,054 SGD|Avg: $3,656 SGD

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

Retailer 21

Retailer 22

Retailer 23

Retailer 24

Retailer 25

Retailer 26

Retailer 27

November 1, 2026

Retailer 10$2,500 SGD

Retailer 16$2,644 SGD

Retailer 12$2,716 SGD

Retailer 8$2,749 SGD

Retailer 19$2,956 SGD

Retailer 3$3,126 SGD

Retailer 14$3,218 SGD

Retailer 5$3,228 SGD

Retailer 9$3,406 SGD

Retailer 18$3,407 SGD

Retailer 4$3,433 SGD

Retailer 11$3,442 SGD

Retailer 25$3,490 SGD

Retailer 27$3,490 SGD

Retailer 26$3,624 SGD

Retailer 2$3,707 SGD

Retailer 6$3,958 SGD

Retailer 7$4,027 SGD

Retailer 21$4,094 SGD

Retailer 20$4,214 SGD

Retailer 15$4,433 SGD

Retailer 24$4,473 SGD

Retailer 23$4,512 SGD

Retailer 22$4,735 SGD

Retailer 17$4,866 SGD

Retailer 13$6,442 SGD

NZ Jewellers$8,054 SGD

27 data points across 27 retailers

22 retailers$3,126 SGD to $8,054 SGD

Retailer 1

$2,716 SGD

$2,124 USD

Price last confirmed 18 days ago

Retailer 2

$2,749 SGD

$2,150 USD

View

Price last confirmed 18 days ago

Retailer 3

$2,956 SGD

View

Price last confirmed 18 days ago

B+

Retailer 4

$3,126 SGD

$2,445 USD

View

B+

Retailer 5

$3,202 SGD

$2,505 USD

View

B+

Retailer 6

$3,228 SGD

$2,525 USD

View

B+

Retailer 7

$3,433 SGD

$2,685 USD

View

Retailer 8

$3,442 SGD

£2,120 GBP

View

Price last confirmed 15 days ago

B+

Retailer 9

$3,490 SGD

$2,730 USD

View

B+

Retailer 10

$3,490 SGD

$2,730 USD

View

B+

Retailer 11

$3,624 SGD

$2,835 USD

View

B+

Retailer 12

$3,707 SGD

£2,283 GBP

View

Retailer 13

$3,958 SGD

$3,096 USD

View

Retailer 14

$4,026 SGD

$3,149 USD

View

Retailer 15

$4,027 SGD

$3,150 USD

View

Retailer 16

$4,094 SGD

£2,522 GBP

View

Retailer 17

$4,433 SGD

$3,467 USD

View

Price last confirmed 17 days ago

Retailer 18

$4,512 SGD

€3,361 EUR

View

Retailer 19

$4,735 SGD

ZAR 59,837 ZAR

View

Retailer 20

$4,866 SGD

$3,806 USD

View

Price last confirmed 17 days ago

Retailer 21

$6,442 SGD

£3,968 GBP

View

Most Expensive

NZ Jewellers

6443b987-1d38-4d76-b20b-560ff4338924 · Oct 30

$8,054 SGD

$6,300 USD

View

21 more retailers have this diamond

Prices start from $3,126 SGDSave up to $4,928 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.

Similar diamonds

B+

1.00ct Round

$3,126 SGD