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Round|Natural|GIA

1.51ct L I1 Round Natural Diamond

EX • L/I1 • GIA 6421580846

Certificate GIA 6421580846

Diamond specifications and retailer prices

From £2,234 GBP
As of November 6, 2026
Save £1,187 GBP (35%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £5,165 GBP at NZ Jewellers · As of October 27, 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 L colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 6421580846. Listed at 12 retailers as of November 5, 2026, with a 53% 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
L
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6421580846
Dimensions7.33 × 7.36 × 4.54 mm
L/W Ratio1.00
Star length45%
Lower girdle80%
Top View
7.33 mm7.36 mm1.51 ctL / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421580846
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41°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 6
Current: £2,234 GBP|Low: £2,234 GBP|High: £3,528 GBP|Avg: £2,941 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 1£2,234 GBP
Retailer 3£2,643 GBP
Retailer 2£3,343 GBP
Retailer 4£3,528 GBP

42 data points across 4 retailers

12 retailers£2,234 GBP to £3,421 GBP

B+
Cheapest Retailer
-
£2,234 GBP
B
Retailer 2
-
£2,609 GBP
View
B
Retailer 3
-
£2,643 GBP
View
Retailer 4
-
£2,965 GBP
View
Price last confirmed 11 days ago
B
Retailer 5
-
£2,965 GBP
View
Retailer 6
-
£2,965 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£2,965 GBP
View
Price last confirmed 12 days ago
B
Retailer 8
-
£3,343 GBP
View
Retailer 9
-
£3,421 GBP
View
Price last confirmed 10 days ago
B
Retailer 10
-
£3,421 GBP
View
B
Retailer 11
-
£3,421 GBP
View
Most Expensive
NZ Jewellers
45f509f5-855f-4b6b-81b5-886313e593f2 · Oct 27
£5,165 GBP
$6,952 USD
View
Price last confirmed 10 days ago
11 more retailers have this diamond
Prices start from £2,234 GBPSave up to £1,187 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.

B+
1.51ct Round
£2,234 GBP