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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566054289

Certificate GIA 2566054289

Diamond specifications and retailer prices

From $7,034 SGD
$5,502 USD
As of November 1, 2026
Save $5,731 SGD (45%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $14,801 SGD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566054289. Listed at 19 retailers as of November 1, 2026, with a 81% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566054289
Dimensions7.28 × 7.32 × 4.59 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Knot, Feather, Needle
Top View
7.28 mm7.32 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566054289
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
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: Nov 1
Current: $9,420 SGD|Low: $7,034 SGD|High: $13,196 SGD|Avg: $9,042 SGD|-1.3%
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
November 2, 2026
Retailer 2$7,034 SGD
Retailer 5$7,236 SGD
Retailer 13$7,244 SGD
Retailer 3$7,334 SGD
Retailer 6$7,658 SGD
Retailer 15$7,709 SGD
Retailer 4$8,170 SGD
Retailer 7$8,450 SGD
Retailer 12$8,450 SGD
Retailer 8$8,725 SGD
Retailer 14$8,890 SGD
Retailer 1$9,420 SGD
Retailer 9$9,739 SGD
Retailer 11$11,253 SGD
Retailer 10$12,764 SGD

40 data points across 15 retailers

19 retailers$7,034 SGD to $12,764 SGD

A
Cheapest Retailer
-
$7,034 SGD
$5,502 USD
B+
Retailer 2
-
$7,236 SGD
$5,660 USD
View
B+
Retailer 3
-
$7,244 SGD
$5,666 USD
View
B+
Retailer 4
-
$7,334 SGD
$5,737 USD
View
B+
Retailer 5
-
$7,658 SGD
$5,990 USD
View
Final sale: no returns
B+
Retailer 6
-
$7,709 SGD
$6,030 USD
View
B+
Retailer 7
-
$8,170 SGD
$6,391 USD
View
B+
Retailer 8
-
$8,450 SGD
$6,610 USD
View
Retailer 9
-
$8,450 SGD
$6,610 USD
View
Price last confirmed 18 days ago
B+
Retailer 10
-
$8,725 SGD
£5,374 GBP
View
Retailer 11
-
$8,850 SGD
$6,923 USD
View
Price last confirmed 25 days ago
Retailer 12
-
$8,890 SGD
A$10,698 AUD
View
Price last confirmed 11 days ago
Retailer 13
-
$8,986 SGD
$7,029 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
$9,420 SGD
£5,802 GBP
View
B+
Retailer 15
-
$9,739 SGD
€7,255 EUR
View
Retailer 16
-
$10,212 SGD
$7,988 USD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$11,253 SGD
ZAR 142,210 ZAR
View
B
Retailer 18
-
$12,764 SGD
£7,862 GBP
View
Most Expensive
NZ Jewellers
2cc99845-ad31-4206-9a33-efb150097eb4 · Sep 28
$14,801 SGD
$11,578 USD
View
Price last confirmed 35 days ago
18 more retailers have this diamond
Prices start from $7,034 SGDSave up to $5,731 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.

A
1.51ct Round
$7,034 SGD