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Round|Natural|GIA

1.51ct I I1 Round Natural Diamond

EX • I/I1 • GIA 1553379600

Certificate GIA 1553379600

Diamond specifications and retailer prices

From £2,417 GBP
HK$25,300 HKD
As of November 1, 2026
Save £1,189 GBP (33%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £5,575 GBP at NZ Jewellers · As of October 17, 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 I colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 1553379600. Listed at 9 retailers as of November 1, 2026, with a 49% 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
I
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1553379600
Dimensions7.24 × 7.30 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Natural
Top View
7.24 mm7.30 mm1.51 ctI / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553379600
Side View
Table 56.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: 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: Nov 1
Current: £2,552 GBP|Low: £2,398 GBP|High: £3,808 GBP|Avg: £3,025 GBP|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3£2,417 GBP
Retailer 1£2,552 GBP
Retailer 5£2,827 GBP
Retailer 4£2,940 GBP
Retailer 2£3,606 GBP
Retailer 6£3,808 GBP

42 data points across 6 retailers

9 retailers£2,417 GBP to £3,606 GBP

A
Cheapest Retailer
-
£2,417 GBP
HK$25,300 HKD
A
Retailer 2
-
£2,552 GBP
₹325,623 INR
View
B+
Retailer 3
-
£2,940 GBP
$3,939 USD
View
Retailer 4
-
£3,200 GBP
$4,288 USD
View
Price last confirmed 16 days ago
Retailer 5
-
£3,200 GBP
$4,288 USD
View
Price last confirmed 12 days ago
Retailer 6
-
£3,200 GBP
$4,288 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
£3,606 GBP
€4,602 EUR
View
Retailer 8
-
£3,692 GBP
$4,947 USD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
ccdbccab-96f8-46cd-b103-0dcbd525b30e · Oct 17
£5,575 GBP
$7,470 USD
View
Price last confirmed 15 days ago
8 more retailers have this diamond
Prices start from £2,417 GBPSave up to £1,189 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
£2,417 GBP