Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 6531369634

Certificate GIA 6531369634

Diamond specifications and retailer prices

From $10,774 USD
Save $473 USD (4%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $15,634 USD at NZ Jewellers
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 F 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 6531369634. Listed at 14 retailers, with a relatively tight 4% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
F
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531369634
Dimensions9.60 × 6.16 × 3.93 mm
L/W Ratio1.56
Top View
9.60 mm6.16 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6531369634
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $15,634 USD|Low: $8,555 USD|High: $15,634 USD|Avg: $10,529 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
Retailer 16
September 29, 2026
Retailer 13$8,657 USD
Retailer 8$8,783 USD
Retailer 4$9,381 USD
Retailer 14$9,460 USD
Retailer 7$10,003 USD
Retailer 16$10,162 USD
Retailer 12$10,210 USD
Retailer 11$10,602 USD
Retailer 5$10,756 USD
Retailer 9$10,774 USD
Retailer 2$11,233 USD
Retailer 10$11,502 USD
Retailer 3$11,726 USD
Retailer 6$13,372 USD
Retailer 15$14,651 USD
NZ Jewellers$15,634 USD

38 data points across 16 retailers

14 retailers$10,774 USD to $11,247 USD

B+
Retailer 1
-
$8,657 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$8,783 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$9,460 USD
View
Price last confirmed 7 days ago
B
Retailer 4
-
$10,003 USD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$10,162 USD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$10,210 USD
A$15,707 AUD
View
Price last confirmed 7 days ago
B
Retailer 7
-
$10,602 USD
£8,348 GBP
View
Price last confirmed 7 days ago
B
Retailer 8
-
$10,774 USD
View
B
Retailer 9
-
$11,247 USD
£8,856 GBP
View
B
Retailer 10
-
$11,502 USD
€10,954 EUR
View
Price last confirmed 7 days ago
B
Retailer 11
-
$11,726 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$13,372 USD
ZAR 216,032 ZAR
View
Price last confirmed 42 days ago
B
Retailer 13
-
$14,651 USD
£11,536 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
ef70bf24-57fa-4a5e-9bde-f717cf668600 · Sep 19
$15,634 USD
View
Price last confirmed 11 days ago
13 more retailers have this diamond
Prices start from $10,774 USDSave up to $473 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.

B+
1.51ct Oval
$10,774 USD