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Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1285728814

Certificate GIA 1285728814

Diamond specifications and retailer prices

From $14,299 SGD
$11,185 USD
As of October 28, 2026
Save $11,198 SGD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $25,497 SGD at MOH London · As of October 29, 2026
View at MOH London

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 1285728814. Listed at 19 retailers as of October 28, 2026, with prices from $14,299 to $25,497, a $11,198 spread on the same certified stone. MOH London lists it at $25,497. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1285728814
Dimensions8.56 × 6.58 × 4.11 mm
L/W Ratio1.30
Culet sizeNone
Top View
8.56 mm6.58 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1285728814
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.5%

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 28
Current: $25,497 SGD|Low: $14,299 SGD|High: $25,667 SGD|Avg: $19,189 SGD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7$14,299 SGD
Retailer 3$16,238 SGD
Retailer 8$17,321 SGD
Retailer 2$17,332 SGD
Retailer 6$17,433 SGD
Retailer 10$17,592 SGD
Retailer 11$18,268 SGD
Retailer 5$19,536 SGD
Retailer 9$23,005 SGD
Retailer 4$23,857 SGD
MOH London$25,497 SGD

44 data points across 11 retailers

19 retailers$14,299 SGD to $25,497 SGD

B+
Cheapest Retailer
-
$14,299 SGD
$11,185 USD
B
Retailer 2
-
$15,066 SGD
$11,785 USD
View
B
Retailer 3
-
$15,086 SGD
$11,801 USD
View
B
Retailer 4
-
$15,175 SGD
CA$16,486 CAD
View
B
Retailer 5
-
$15,974 SGD
$12,495 USD
View
B
Retailer 6
-
$16,238 SGD
$12,702 USD
View
B
Retailer 7
-
$17,321 SGD
$13,549 USD
View
B
Retailer 8
-
$17,332 SGD
£10,675 GBP
View
Retailer 9
-
$17,433 SGD
A$20,979 AUD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$17,592 SGD
$13,761 USD
View
B
Retailer 11
-
$18,268 SGD
$14,290 USD
View
B
Retailer 12
-
$18,639 SGD
$14,580 USD
View
B
Retailer 13
-
$18,639 SGD
$14,580 USD
View
B
Retailer 14
-
$18,818 SGD
$14,720 USD
View
B
Retailer 15
-
$19,265 SGD
$15,070 USD
View
B
Retailer 16
-
$19,536 SGD
€14,554 EUR
View
B
Retailer 17
-
$23,005 SGD
$17,995 USD
View
B
Retailer 18
-
$23,857 SGD
ZAR 301,479 ZAR
View
Most Expensive
B
MOH London
6AEEE2EE4 · Oct 29
$25,497 SGD
£15,704 GBP
View
18 more retailers have this diamond
Prices start from $14,299 SGDSave up to $11,198 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 Oval
$14,299 SGD