CaratHunter
Plans
Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 7518688839

Certificate GIA 7518688839

Diamond specifications and retailer prices

From $10,378 SGD
₹773,153 INR
As of October 31, 2026
Save $7,549 SGD (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $19,030 SGD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 7518688839. Listed at 21 retailers as of October 29, 2026, with a 73% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7518688839
Dimensions9.69 × 6.38 × 3.91 mm
L/W Ratio1.52
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.69 mm6.38 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7518688839
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.4%

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: $19,030 SGD|Low: $10,378 SGD|High: $19,030 SGD|Avg: $13,755 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
October 31, 2026
Retailer 2$10,378 SGD
Retailer 3$11,520 SGD
Retailer 6$11,695 SGD
Retailer 7$12,488 SGD
Retailer 12$12,602 SGD
Retailer 5$12,604 SGD
Retailer 13$12,668 SGD
Retailer 14$13,864 SGD
Retailer 10$13,866 SGD
Retailer 8$14,387 SGD
Retailer 4$15,129 SGD
Retailer 11$16,580 SGD
Retailer 9$17,927 SGD
NZ Jewellers$19,030 SGD

33 data points across 14 retailers

21 retailers$10,378 SGD to $17,927 SGD

A
Cheapest Retailer
-
$10,378 SGD
₹773,153 INR
B+
Retailer 2
-
$11,520 SGD
$9,011 USD
View
B+
Retailer 3
-
$11,695 SGD
$9,148 USD
View
B+
Retailer 4
-
$11,913 SGD
$9,319 USD
View
B+
Retailer 5
-
$12,471 SGD
$9,755 USD
View
B+
Retailer 6
-
$12,488 SGD
£7,692 GBP
View
B+
Retailer 7
-
$12,602 SGD
$9,858 USD
View
Final sale: no returns
Retailer 8
-
$12,604 SGD
$9,859 USD
View
Price last confirmed 19 days ago
Retailer 9
-
$12,668 SGD
A$15,245 AUD
View
Price last confirmed 27 days ago
B+
Retailer 10
-
$13,631 SGD
$10,663 USD
View
Retailer 11
-
$13,653 SGD
$10,680 USD
View
Price last confirmed 39 days ago
Retailer 12
-
$13,653 SGD
$10,680 USD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
$13,866 SGD
$10,847 USD
View
B+
Retailer 14
-
$13,969 SGD
$10,927 USD
View
B+
Retailer 15
-
$14,387 SGD
€10,718 EUR
View
B
Retailer 16
-
$15,129 SGD
$11,835 USD
View
Retailer 17
-
$15,754 SGD
$12,323 USD
View
Price last confirmed 22 days ago
Retailer 18
-
$15,754 SGD
$12,323 USD
View
Price last confirmed 39 days ago
Retailer 19
-
$16,580 SGD
ZAR 209,522 ZAR
View
Price last confirmed 19 days ago
B
Retailer 20
-
$17,927 SGD
£11,042 GBP
View
Most Expensive
NZ Jewellers
2bec4626-2b35-41e2-a961-5fa7ade75aac · Sep 30
$19,030 SGD
$14,886 USD
View
Price last confirmed 31 days ago
20 more retailers have this diamond
Prices start from $10,378 SGDSave up to $7,549 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 Oval
$10,378 SGD