Round|Natural|GIA

1.51ct H I1 Round Natural Diamond

EX • H/I1 • GIA 7551664938

Certificate GIA 7551664938

Diamond specifications and retailer prices

From $4,404 USD
As of November 1, 2026
Save $1,816 USD (29%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,233 USD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 7551664938. Listed at 10 retailers as of November 1, 2026, with a 41% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7551664938
Dimensions7.31 × 7.36 × 4.54 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
7.31 mm7.36 mm1.51 ctH / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551664938
Side View
Table 58.0%Crown 35°Girdle: STK-STKPavilion 40.8°Culet: NoneDepth 61.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $6,220 USD|Low: $4,404 USD|High: $6,330 USD|Avg: $5,523 USD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 2$4,404 USD
Retailer 3$5,320 USD
Retailer 4$5,660 USD
Retailer 5$5,660 USD
Retailer 6$5,850 USD
Retailer 1$6,220 USD

18 data points across 6 retailers

10 retailers$4,404 USD to $6,220 USD

B+
Cheapest Retailer
-
$4,404 USD
Retailer 2
-
$5,001 USD
View
Price last confirmed 25 days ago
Retailer 3
-
$5,165 USD
View
Price last confirmed 33 days ago
B+
Retailer 4
-
$5,320 USD
View
B
Retailer 5
-
$5,660 USD
View
B
Retailer 6
-
$5,660 USD
View
Retailer 7
-
$5,771 USD
View
Price last confirmed 23 days ago
B
Retailer 8
-
$5,850 USD
View
B
Retailer 9
-
$6,220 USD
€5,924 EUR
View
Most Expensive
NZ Jewellers
897f801d-11a2-4dd8-ad43-ad3bc4ba92bc · Sep 28
$9,233 USD
View
Price last confirmed 35 days ago
9 more retailers have this diamond
Prices start from $4,404 USDSave up to $1,816 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 Round
$4,404 USD