Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

ID • D/SI1 • GIA 7548154942

Certificate GIA 7548154942

Diamond specifications and retailer prices

From $6,554 USD
As of October 29, 2026
Save $5,931 USD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,485 USD at NZ Jewellers · As of October 27, 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 7548154942. Listed at 9 retailers as of October 27, 2026, with prices from $6,554 to $12,485, a $5,931 spread on the same certified stone. NZ Jewellers lists it at $12,485. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.36°
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 7548154942
Dimensions8.58 × 6.28 × 4.13 mm
L/W Ratio1.37
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
8.58 mm6.28 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7548154942
Side View
Table 57.0%Crown 40.36°Girdle: ThickPavilion 39.7°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $12,485 USD|Low: $6,554 USD|High: $13,371 USD|Avg: $8,599 USD|-6.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 7$6,554 USD
Retailer 8$6,895 USD
Retailer 4$7,025 USD
Retailer 6$7,465 USD
Retailer 10$7,466 USD
Retailer 9$7,521 USD
Retailer 2$7,580 USD
Retailer 3$8,203 USD
Retailer 11$8,777 USD
Retailer 5$10,460 USD
NZ Jewellers$12,485 USD

36 data points across 11 retailers

9 retailers$6,554 USD to $12,485 USD

A
Cheapest Retailer
-
$6,554 USD
A
Retailer 2
-
$6,895 USD
View
A
Retailer 3
-
$7,025 USD
£5,532 GBP
View
A
Retailer 4
-
$7,465 USD
View
A
Retailer 5
-
$7,466 USD
A$11,486 AUD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$7,521 USD
View
A
Retailer 7
-
$7,580 USD
View
B+
Retailer 8
-
$10,460 USD
£8,236 GBP
View
Most Expensive
B
NZ Jewellers
984f1d09-a5b6-4647-8c0e-b339513c0872 · Oct 27
$12,485 USD
View
8 more retailers have this diamond
Prices start from $6,554 USDSave up to $5,931 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
$6,554 USD