Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1533355515

Certificate GIA 1533355515

Diamond specifications and retailer prices

From $7,374 USD
As of November 6, 2026
Save $4,116 USD (36%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $15,751 USD at NZ Jewellers · As of October 11, 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 1533355515. Listed at 21 retailers as of November 6, 2026, with a 56% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.13°
Pavilion angle39.24°
OriginNatural
Grading LabGIA
CertificateGIA 1533355515
Dimensions8.87 × 6.40 × 4.01 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.87 mm6.40 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1533355515
Side View
Table 58.0%Crown 39.13°Girdle: STK-THKPavilion 39.24°Culet: NoneDepth 62.6%

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: Nov 6
Current: $8,703 USD|Low: $6,360 USD|High: $13,536 USD|Avg: $8,969 USD|-2.7%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 7, 2026
Retailer 11$7,035 USD
Retailer 6$7,323 USD
Retailer 5$7,374 USD
Retailer 15$7,485 USD
Retailer 9$7,578 USD
Retailer 20$7,845 USD
Retailer 8$7,876 USD
Retailer 7$8,392 USD
Retailer 12$8,425 USD
Retailer 1$8,703 USD
Retailer 19$8,733 USD
Retailer 10$8,823 USD
Retailer 14$8,829 USD
Retailer 13$8,950 USD
Retailer 3$9,350 USD
Retailer 21$9,350 USD
Retailer 17$9,537 USD
Retailer 2$9,660 USD
Retailer 18$9,768 USD
Retailer 16$11,490 USD
Retailer 4$13,282 USD

29 data points across 21 retailers

21 retailers$7,374 USD to $11,490 USD

Retailer 1
-
$7,035 USD
Price last confirmed 31 days ago
A
Retailer 2
-
$7,374 USD
View
A
Retailer 3
-
$7,485 USD
View
B+
Retailer 4
-
$7,845 USD
View
B+
Retailer 5
-
$7,876 USD
View
Final sale: no returns
Retailer 6
-
$7,876 USD
View
Price last confirmed 26 days ago
B+
Retailer 7
-
$8,392 USD
View
B+
Retailer 8
-
$8,425 USD
View
Retailer 9
-
$8,532 USD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
$8,703 USD
View
B+
Retailer 11
-
$8,733 USD
View
B+
Retailer 12
-
$8,823 USD
View
Retailer 13
-
$8,950 USD
View
Price last confirmed 34 days ago
B+
Retailer 14
-
$9,350 USD
View
B+
Retailer 15
-
$9,350 USD
View
B+
Retailer 16
-
$9,537 USD
View
B+
Retailer 17
-
$9,660 USD
View
B+
Retailer 18
-
$9,768 USD
View
Retailer 19
-
$9,845 USD
View
Price last confirmed 26 days ago
B
Retailer 20
-
$11,490 USD
View
Most Expensive
NZ Jewellers
4a2962c9-f624-42b0-a771-d100a6d65180 · Oct 11
$15,751 USD
View
Price last confirmed 26 days ago
20 more retailers have this diamond
Prices start from $7,374 USDSave up to $4,116 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
$7,374 USD