Oval|Natural|GIA

1.51ct I I1 Oval Natural Diamond

VG • I/I1 • GIA 6405301687

Certificate GIA 6405301687

Diamond specifications and retailer prices

From $3,550 USD
As of November 1, 2026
Save $1,597 USD (31%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,922 USD at NZ Jewellers · As of September 30, 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 I colour (near-colourless) and I1 clarity (included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6405301687. Listed at 11 retailers as of October 31, 2026, with a 45% 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
I
Color
I1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6405301687
Dimensions8.66 × 6.33 × 4.03 mm
L/W Ratio1.37
Top View
8.66 mm6.33 mm1.51 ctI / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6405301687
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 63.6%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $5,147 USD|Low: $3,511 USD|High: $7,857 USD|Avg: $4,579 USD|+2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 4$3,511 USD
Retailer 5$3,550 USD
Retailer 11$3,625 USD
Retailer 7$3,650 USD
Retailer 9$4,037 USD
Retailer 6$4,120 USD
Retailer 10$4,640 USD
Retailer 12$4,640 USD
Retailer 2$4,800 USD
Retailer 1$5,147 USD
Retailer 8$5,411 USD
Retailer 3$7,857 USD

18 data points across 12 retailers

11 retailers$3,550 USD to $5,147 USD

A
Cheapest Retailer
-
$3,550 USD
B+
Retailer 2
-
$3,625 USD
View
B+
Retailer 3
-
$4,037 USD
View
Retailer 4
-
$4,120 USD
View
Price last confirmed 31 days ago
Retailer 5
-
$4,120 USD
View
Price last confirmed 33 days ago
B+
Retailer 6
-
$4,640 USD
View
B+
Retailer 7
-
$4,640 USD
View
Retailer 8
-
$4,753 USD
View
Price last confirmed 34 days ago
B+
Retailer 9
-
$4,800 USD
View
B
Retailer 10
-
$5,147 USD
€4,902 EUR
View
Most Expensive
NZ Jewellers
a02b1e4d-94ec-4416-8419-fa2182ec3ba2 · Sep 30
$7,922 USD
View
Price last confirmed 32 days ago
10 more retailers have this diamond
Prices start from $3,550 USDSave up to $1,597 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
$3,550 USD