Round|Natural|GIA

1.51ct H I1 Round Natural Diamond

VG • H/I1 • GIA 7518377768

Certificate GIA 7518377768

Diamond specifications and retailer prices

From $3,558 USD
HK$27,800 HKD
As of November 1, 2026
Save $1,926 USD (35%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,479 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 very-good cut grade and certified by GIA 7518377768. Listed at 9 retailers as of November 1, 2026, with a 54% 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
H
Color
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 7518377768
Dimensions7.13 × 7.09 × 4.57 mm
L/W Ratio1.01
Star length55%
Lower girdle70%
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Cavity, Needle, Indented Natural, Natural
Top View
7.13 mm7.09 mm1.51 ctH / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7518377768
Side View
Table 58.0%Crown 38°Girdle: THN-THKPavilion 40.2°Culet: NoneDepth 64.3%

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: $5,484 USD|Low: $3,478 USD|High: $5,820 USD|Avg: $4,884 USD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 8$3,478 USD
Retailer 3$3,558 USD
Retailer 6$4,245 USD
Retailer 4$4,399 USD
Retailer 5$4,876 USD
Retailer 1$5,484 USD
Retailer 2$5,630 USD
Retailer 9$5,630 USD
Retailer 7$5,791 USD
Retailer 10$5,820 USD

22 data points across 10 retailers

9 retailers$3,558 USD to $5,484 USD

B+
Cheapest Retailer
-
$3,558 USD
HK$27,800 HKD
B+
Retailer 2
-
$4,245 USD
View
B+
Retailer 3
-
$4,399 USD
View
Retailer 4
-
$4,867 USD
View
Price last confirmed 25 days ago
Retailer 5
-
$4,867 USD
View
Price last confirmed 33 days ago
B
Retailer 6
-
$4,876 USD
View
B
Retailer 7
-
$5,484 USD
€5,223 EUR
View
Retailer 8
-
$5,615 USD
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
301fb141-dbc6-4bf7-9150-08819dd90cbd · Sep 28
$8,479 USD
View
Price last confirmed 35 days ago
8 more retailers have this diamond
Prices start from $3,558 USDSave up to $1,926 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
$3,558 USD