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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7481667514

Certificate GIA 7481667514

Diamond specifications and retailer prices

From $8,661 SGD
$6,775 USD
As of November 1, 2026
Save $10,104 SGD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $18,766 SGD at NZ Jewellers · As of October 30, 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 7481667514. Listed at 19 retailers as of October 30, 2026, with prices from $8,661 to $18,766, a $10,104 spread on the same certified stone. NZ Jewellers lists it at $18,766. 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
FluorescenceMedium
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7481667514
Dimensions7.35 × 7.30 × 4.53 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Pinpoints are not shown.
Top View
7.35 mm7.30 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7481667514
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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: Nov 1
Current: $11,582 SGD|Low: $8,661 SGD|High: $15,825 SGD|Avg: $11,374 SGD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 8$8,661 SGD
Retailer 7$8,785 SGD
Retailer 9$9,371 SGD
Retailer 2$10,321 SGD
Retailer 3$10,386 SGD
Retailer 6$10,626 SGD
Retailer 1$11,582 SGD
Retailer 10$12,584 SGD
Retailer 4$13,784 SGD
Retailer 5$15,719 SGD

44 data points across 10 retailers

19 retailers$8,661 SGD to $18,766 SGD

B+
Cheapest Retailer
-
$8,661 SGD
$6,775 USD
B+
Retailer 2
-
$8,785 SGD
$6,872 USD
View
B+
Retailer 3
-
$9,371 SGD
$7,330 USD
View
B+
Retailer 4
-
$9,382 SGD
$7,339 USD
View
B+
Retailer 5
-
$10,165 SGD
$7,951 USD
View
B+
Retailer 6
-
$10,321 SGD
$8,073 USD
View
B+
Retailer 7
-
$10,386 SGD
£6,397 GBP
View
Retailer 8
-
$10,626 SGD
A$12,788 AUD
View
Price last confirmed 11 days ago
B
Retailer 9
-
$11,186 SGD
$8,750 USD
View
B
Retailer 10
-
$11,186 SGD
$8,750 USD
View
B
Retailer 11
-
$11,557 SGD
$9,040 USD
View
B
Retailer 12
-
$11,582 SGD
€8,628 EUR
View
B
Retailer 13
-
$11,728 SGD
$9,174 USD
View
Retailer 14
-
$12,357 SGD
$9,666 USD
View
Price last confirmed 10 days ago
Retailer 15
-
$12,584 SGD
£7,751 GBP
View
Price last confirmed 33 days ago
B
Retailer 16
-
$13,784 SGD
ZAR 174,184 ZAR
View
B
Retailer 17
-
$15,719 SGD
£9,682 GBP
View
B
Retailer 18
-
$17,731 SGD
£10,921 GBP
View
Most Expensive
B
NZ Jewellers
9149c5bf-0b50-4c78-bce4-33fd8893ebd1 · Oct 30
$18,766 SGD
$14,679 USD
View
18 more retailers have this diamond
Prices start from $8,661 SGDSave up to $10,104 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.

B+
1.51ct Round
$8,661 SGD