Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1285728814

Certificate GIA 1285728814

Diamond specifications and retailer prices

From $15,624 CAD
$11,185 USD
As of October 28, 2026
Save $12,236 CAD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $27,860 CAD 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 $15,624 to $27,860, a $12,236 spread on the same certified stone. MOH London lists it at $27,860. 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
Color
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: $27,860 CAD|Low: $15,624 CAD|High: $28,046 CAD|Avg: $20,957 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 7$15,624 CAD
Retailer 3$17,743 CAD
Retailer 8$18,927 CAD
Retailer 4$18,937 CAD
Retailer 6$19,049 CAD
Retailer 10$19,223 CAD
Retailer 11$19,962 CAD
Retailer 2$21,347 CAD
Retailer 9$25,137 CAD
Retailer 5$25,930 CAD
MOH London$27,860 CAD

44 data points across 11 retailers

19 retailers$15,624 CAD to $27,860 CAD

B+
Cheapest Retailer
-
$15,624 CAD
$11,185 USD
B
Retailer 2
-
$16,462 CAD
$11,785 USD
View
B
Retailer 3
-
$16,485 CAD
$11,801 USD
View
B
Retailer 4
-
$16,581 CAD
View
B
Retailer 5
-
$17,454 CAD
$12,495 USD
View
B
Retailer 6
-
$17,743 CAD
$12,702 USD
View
B
Retailer 7
-
$18,927 CAD
$13,549 USD
View
B
Retailer 8
-
$18,937 CAD
£10,675 GBP
View
Retailer 9
-
$19,049 CAD
A$20,979 AUD
View
Price last confirmed 7 days ago
B
Retailer 10
-
$19,223 CAD
$13,761 USD
View
B
Retailer 11
-
$19,962 CAD
$14,290 USD
View
B
Retailer 12
-
$20,367 CAD
$14,580 USD
View
B
Retailer 13
-
$20,367 CAD
$14,580 USD
View
B
Retailer 14
-
$20,562 CAD
$14,720 USD
View
B
Retailer 15
-
$21,051 CAD
$15,070 USD
View
B
Retailer 16
-
$21,347 CAD
€14,554 EUR
View
B
Retailer 17
-
$25,137 CAD
$17,995 USD
View
B
Retailer 18
-
$25,930 CAD
ZAR 299,876 ZAR
View
Most Expensive
B
MOH London
6AEEE2EE4 · Oct 29
$27,860 CAD
£15,704 GBP
View
18 more retailers have this diamond
Prices start from $15,624 CADSave up to $12,236 CAD

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
$15,624 CAD