Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

VG • F/SI1 • GIA 2556750792

Certificate GIA 2556750792

Diamond specifications and retailer prices

From $5,604 USD
Save $3,087 USD (36%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,929 USD at Taylor and Hart
View at Taylor and Hart

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556750792. Listed at 17 retailers, with a 55% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle45.4°
Pavilion angle36.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556750792
Dimensions8.33 × 6.38 × 4.18 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Top View
8.33 mm6.38 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556750792
Side View
Table 65.0%Crown 45.4°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 65.6%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $5,604 USD|Low: $5,604 USD|High: $16,142 USD|Avg: $8,118 USD|-10.2%
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
Taylor and Hart
October 1, 2026
Retailer 1$5,604 USD
Retailer 4$5,695 USD
Retailer 3$5,798 USD
Retailer 18$5,910 USD
Retailer 16$5,920 USD
Retailer 9$6,072 USD
Retailer 14$6,230 USD
Retailer 10$6,708 USD
Retailer 8$7,129 USD
Retailer 19$7,325 USD
Retailer 12$7,840 USD
Retailer 17$7,840 USD
Retailer 15$7,847 USD
Retailer 13$7,924 USD
Retailer 5$8,300 USD
Retailer 2$8,691 USD
Retailer 11$9,045 USD
Retailer 6$13,350 USD
Retailer 7$13,591 USD
Taylor and Hart$15,929 USD

28 data points across 20 retailers

17 retailers$5,604 USD to $8,691 USD

A
Cheapest Retailer
-
$5,604 USD
A
Retailer 2
-
$5,798 USD
HK$45,300 HKD
View
B+
Retailer 3
-
$5,910 USD
View
B+
Retailer 4
-
$5,920 USD
View
B+
Retailer 5
-
$6,230 USD
View
B+
Retailer 6
-
$7,129 USD
A$10,968 AUD
View
B+
Retailer 7
-
$7,325 USD
View
B
Retailer 8
-
$7,675 USD
View
Price last confirmed 61 days ago
B
Retailer 9
-
$7,840 USD
View
B
Retailer 10
-
$7,840 USD
View
B
Retailer 11
-
$7,847 USD
£6,179 GBP
View
B
Retailer 12
-
$7,924 USD
€7,547 EUR
View
B
Retailer 13
-
$8,300 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
$8,691 USD
View
B
Retailer 15
-
$9,045 USD
ZAR 146,122 ZAR
View
Price last confirmed 42 days ago
C
Retailer 16
-
$13,350 USD
View
Price last confirmed 13 days ago
Most Expensive
C
Taylor and Hart
NSVO6C9 · Sep 17
$15,929 USD
View
Price last confirmed 13 days ago
16 more retailers have this diamond
Prices start from $5,604 USDSave up to $3,087 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.

A
1.51ct Oval
$5,604 USD