Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6542034653

Certificate GIA 6542034653

Diamond specifications and retailer prices

From $6,830 USD
As of October 30, 2026
Save $2,450 USD (26%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $15,088 USD at NZ Jewellers · As of September 19, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542034653. Listed at 14 retailers as of October 30, 2026, with a 36% 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
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542034653
Dimensions9.03 × 6.43 × 4.02 mm
L/W Ratio1.40
Top View
9.03 mm6.43 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6542034653
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.5%

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 30
Current: $15,088 USD|Low: $6,454 USD|High: $15,088 USD|Avg: $9,197 USD
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
Retailer 15
October 23, 2026
Retailer 10$6,454 USD
Retailer 8$6,830 USD
Retailer 12$6,922 USD
Retailer 11$7,294 USD
Retailer 6$7,544 USD
Retailer 2$8,143 USD
Retailer 5$8,173 USD
Retailer 9$8,980 USD
Retailer 14$8,980 USD
Retailer 15$9,280 USD
Retailer 13$9,465 USD
Retailer 3$9,785 USD
Retailer 7$10,754 USD
Retailer 4$12,640 USD
NZ Jewellers$15,088 USD

27 data points across 15 retailers

14 retailers$6,830 USD to $9,280 USD

Retailer 1
-
$6,454 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$6,830 USD
View
A
Retailer 3
-
$6,922 USD
View
A
Retailer 4
-
$7,294 USD
View
Final sale: no returns
Retailer 5
-
$7,544 USD
View
Price last confirmed 14 days ago
Retailer 6
-
$8,143 USD
£6,412 GBP
View
Price last confirmed 7 days ago
Retailer 7
-
$8,173 USD
View
Price last confirmed 38 days ago
B+
Retailer 8
-
$8,980 USD
View
B+
Retailer 9
-
$8,980 USD
View
B+
Retailer 10
-
$9,280 USD
View
Retailer 11
-
$9,430 USD
View
Price last confirmed 38 days ago
Retailer 12
-
$9,465 USD
View
Price last confirmed 9 days ago
Retailer 13
-
$12,640 USD
£9,953 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
ebf27050-4f63-43a9-b8ea-3ce76ee6812a · Sep 19
$15,088 USD
View
Price last confirmed 41 days ago
13 more retailers have this diamond
Prices start from $6,830 USDSave up to $2,450 USD

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
$6,830 USD