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Round|Natural|GIA

1.51ct H I1 Round Natural Diamond

EX • H/I1 • GIA 1445173076

Certificate GIA 1445173076

Diamond specifications and retailer prices

From £2,135 GBP
$2,861 USD
As of November 1, 2026
Save £2,057 GBP (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,192 GBP at NZ Jewellers · As of October 30, 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 1445173076. Listed at 8 retailers as of October 30, 2026, with prices from £2,135 to £4,192, a £2,057 spread on the same certified stone. NZ Jewellers lists it at £4,192. 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
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1445173076
Dimensions7.35 × 7.38 × 4.60 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Needle, Indented Natural, Pinpoint, Natural
Top View
7.35 mm7.38 mm1.51 ctH / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 1445173076
Side View
Table 56.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: £4,192 GBP|Low: £1,839 GBP|High: £4,774 GBP|Avg: £2,774 GBP|-12.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 3£1,839 GBP
Retailer 6£2,135 GBP
Retailer 7£2,208 GBP
Retailer 5£2,406 GBP
Retailer 9£2,406 GBP
Retailer 4£2,499 GBP
Retailer 8£2,776 GBP
Retailer 2£2,804 GBP
Retailer 11£3,231 GBP
Retailer 10£3,260 GBP
NZ Jewellers£4,192 GBP

23 data points across 11 retailers

8 retailers£2,135 GBP to £4,192 GBP

A
Cheapest Retailer
-
£2,135 GBP
$2,861 USD
A
Retailer 2
-
£2,208 GBP
$2,959 USD
View
A
Retailer 3
-
£2,406 GBP
$3,224 USD
View
A
Retailer 4
-
£2,406 GBP
$3,224 USD
View
A
Retailer 5
-
£2,499 GBP
$3,348 USD
View
B+
Retailer 6
-
£2,776 GBP
$3,720 USD
View
B+
Retailer 7
-
£2,804 GBP
€3,578 EUR
View
Most Expensive
B
NZ Jewellers
f418ff9e-7af0-47fa-bff9-45aa3460f485 · Oct 30
£4,192 GBP
$5,617 USD
View
7 more retailers have this diamond
Prices start from £2,135 GBPSave up to £2,057 GBP

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 Round
£2,135 GBP