Oval|Natural|GIA

1.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6552772597

Certificate GIA 6552772597

Diamond specifications and retailer prices

From $6,890 USD
As of October 28, 2026
Save $5,541 USD (45%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,431 USD 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552772597. Listed at 19 retailers as of October 28, 2026, with prices from $6,890 to $12,431, a $5,541 spread on the same certified stone. MOH London lists it at $12,431. 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
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.58°
Pavilion angle39.55°
OriginNatural
Grading LabGIA
CertificateGIA 6552772597
Dimensions8.93 × 6.39 × 4.00 mm
L/W Ratio1.40
Culet sizeNone
Top View
8.93 mm6.39 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552772597
Side View
Table 59.0%Crown 39.58°Girdle: STK-THKPavilion 39.55°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $12,431 USD|Low: $5,576 USD|High: $12,431 USD|Avg: $7,611 USD
MOH London
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
October 29, 2026
Retailer 5$5,576 USD
Retailer 12$6,323 USD
Retailer 11$6,597 USD
Retailer 7$6,704 USD
Retailer 17$6,890 USD
Retailer 8$6,952 USD
Retailer 13$7,042 USD
Retailer 19$7,129 USD
Retailer 15$7,418 USD
Retailer 10$8,095 USD
Retailer 2$8,215 USD
Retailer 20$8,282 USD
Retailer 14$8,409 USD
Retailer 3$8,840 USD
Retailer 18$8,840 USD
Retailer 9$8,960 USD
Retailer 4$9,130 USD
Retailer 16$9,186 USD
Retailer 6$10,676 USD
MOH London$12,431 USD

31 data points across 20 retailers

19 retailers$6,890 USD to $12,431 USD

Retailer 1
-
$5,576 USD
SGD 7,535 SGD
Price last confirmed 10 days ago
Retailer 2
-
$6,323 USD
SGD 8,544 SGD
View
Price last confirmed 17 days ago
Retailer 3
-
$6,597 USD
View
Price last confirmed 18 days ago
Retailer 4
-
$6,704 USD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$6,890 USD
View
B+
Retailer 6
-
$6,913 USD
A$10,635 AUD
View
Retailer 7
-
$6,952 USD
£5,474 GBP
View
Price last confirmed 16 days ago
B+
Retailer 8
-
$7,042 USD
View
B+
Retailer 9
-
$7,129 USD
View
B+
Retailer 10
-
$7,418 USD
View
Final sale: no returns
Retailer 11
-
$8,095 USD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
$8,215 USD
View
B
Retailer 13
-
$8,282 USD
View
B
Retailer 14
-
$8,409 USD
£6,621 GBP
View
B+
Retailer 15
-
$8,840 USD
View
B+
Retailer 16
-
$8,840 USD
View
B+
Retailer 17
-
$9,130 USD
View
B
Retailer 18
-
$9,186 USD
€8,749 EUR
View
Most Expensive
B
MOH London
F89BBB7F4 · Oct 29
$12,431 USD
£9,788 GBP
View
18 more retailers have this diamond
Prices start from $6,890 USDSave up to $5,541 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.

B+
1.51ct Oval
$6,890 USD