Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 1548486476

Certificate GIA 1548486476

Diamond specifications and retailer prices

From $4,726 USD
₹450,066 INR
As of October 30, 2026
Save $1,251 USD (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,977 USD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H 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 1548486476. Listed at 7 retailers as of October 29, 2026, with prices from $4,726 to $5,977, a $1,251 spread on the same certified stone. Blue Nile lists it at $5,977. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1548486476
Dimensions9.07 × 6.46 × 4.09 mm
L/W Ratio1.40
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.07 mm6.46 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1548486476
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.4%

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: Oct 30
Current: $5,977 USD|Low: $4,602 USD|High: $6,611 USD|Avg: $5,287 USD|-9.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2$4,726 USD
Retailer 4$4,825 USD
Retailer 7$5,065 USD
Retailer 6$5,233 USD
Retailer 3$5,364 USD
Retailer 5$5,429 USD
Blue Nile$5,977 USD

38 data points across 7 retailers

7 retailers$4,726 USD to $5,977 USD

A
Cheapest Retailer
-
$4,726 USD
₹450,066 INR
A
Retailer 2
-
$4,825 USD
View
A
Retailer 3
-
$5,065 USD
View
A
Retailer 4
-
$5,233 USD
View
Final sale: no returns
A
Retailer 5
-
$5,364 USD
£4,224 GBP
View
B+
Retailer 6
-
$5,429 USD
SGD 7,336 SGD
View
Most Expensive
B+
Blue Nile
27966075 · Oct 29
$5,977 USD
View
6 more retailers have this diamond
Prices start from $4,726 USDSave up to $1,251 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
$4,726 USD