Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1533904580

Certificate GIA 1533904580

Diamond specifications and retailer prices

From $6,349 SGD
HK$38,800 HKD
As of October 31, 2026
Save $6,256 SGD (50%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $14,309 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1533904580. Listed at 21 retailers as of October 31, 2026, with a 99% 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1533904580
Dimensions7.28 × 7.24 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
7.28 mm7.24 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1533904580
Side View
Table 57.0%Crown 36°Girdle: STK-STKPavilion 40.6°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: Oct 31
Current: $9,481 SGD|Low: $6,349 SGD|High: $12,756 SGD|Avg: $9,292 SGD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$6,349 SGD
Retailer 9$7,448 SGD
Retailer 8$7,895 SGD
Retailer 4$8,151 SGD
Retailer 7$8,350 SGD
Retailer 3$9,306 SGD
Retailer 1$9,481 SGD
Retailer 5$10,512 SGD
Retailer 2$12,605 SGD

39 data points across 9 retailers

21 retailers$6,349 SGD to $12,605 SGD

A
Cheapest Retailer
-
$6,349 SGD
HK$38,800 HKD
Retailer 2
-
$7,245 SGD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
$7,448 SGD
$5,826 USD
View
B+
Retailer 4
-
$7,461 SGD
$5,836 USD
View
Retailer 5
-
$7,758 SGD
$6,068 USD
View
Price last confirmed 104 days ago
B+
Retailer 6
-
$7,895 SGD
$6,176 USD
View
Final sale: no returns
Retailer 7
-
$7,898 SGD
$6,178 USD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$7,939 SGD
$6,210 USD
View
B+
Retailer 9
-
$8,151 SGD
£5,021 GBP
View
Retailer 10
-
$8,350 SGD
A$10,049 AUD
View
Price last confirmed 19 days ago
B+
Retailer 11
-
$8,503 SGD
$6,652 USD
View
Retailer 12
-
$8,555 SGD
$6,692 USD
View
Price last confirmed 24 days ago
Retailer 13
-
$8,687 SGD
$6,795 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
$8,759 SGD
$6,852 USD
View
B
Retailer 15
-
$9,306 SGD
€6,933 EUR
View
B+
Retailer 16
-
$9,481 SGD
£5,840 GBP
View
Retailer 17
-
$9,872 SGD
$7,722 USD
View
Price last confirmed 55 days ago
Retailer 18
-
$9,872 SGD
$7,722 USD
View
Price last confirmed 23 days ago
B+
Retailer 19
-
$10,512 SGD
ZAR 132,836 ZAR
View
B
Retailer 20
-
$12,605 SGD
£7,764 GBP
View
Most Expensive
NZ Jewellers
2e3019be-6bad-462a-ae34-2634988fc2a2 · Sep 28
$14,309 SGD
$11,193 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $6,349 SGDSave up to $6,256 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.

A
1.51ct Round
$6,349 SGD