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Round|Natural|GIA

1.50ct G I1 Round Natural Diamond

EX • G/I1 • GIA 6511277799

Certificate GIA 6511277799

Diamond specifications and retailer prices

From £1,739 GBP
HK$18,200 HKD
As of October 31, 2026
Save £2,320 GBP (57%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,059 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 6511277799. Listed at 10 retailers as of October 30, 2026, with prices from £1,739 to £4,059, a £2,320 spread on the same certified stone. NZ Jewellers lists it at £4,059. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
G
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6511277799
Dimensions7.29 × 7.34 × 4.54 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.29 mm7.34 mm1.50 ctG / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511277799
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.0%

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: Oct 31
Current: £4,059 GBP|Low: £1,720 GBP|High: £4,059 GBP|Avg: £2,263 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3£1,739 GBP
Retailer 2£1,775 GBP
Retailer 9£1,878 GBP
Retailer 7£2,086 GBP
Retailer 5£2,329 GBP
Retailer 6£2,329 GBP
Retailer 10£2,419 GBP
Retailer 4£2,572 GBP
Retailer 8£2,688 GBP
NZ Jewellers£4,059 GBP

45 data points across 10 retailers

10 retailers£1,739 GBP to £4,059 GBP

A
Cheapest Retailer
-
£1,739 GBP
HK$18,200 HKD
A
Retailer 2
-
£1,775 GBP
₹226,532 INR
View
A
Retailer 3
-
£1,878 GBP
₹239,628 INR
View
A
Retailer 4
-
£2,086 GBP
$2,795 USD
View
A
Retailer 5
-
£2,329 GBP
$3,121 USD
View
A
Retailer 6
-
£2,329 GBP
$3,121 USD
View
A
Retailer 7
-
£2,419 GBP
$3,241 USD
View
A
Retailer 8
-
£2,572 GBP
€3,282 EUR
View
B+
Retailer 9
-
£2,688 GBP
$3,601 USD
View
Most Expensive
B
NZ Jewellers
02f0307d-fd2c-4165-be13-ec2a88a0339b · Oct 30
£4,059 GBP
$5,438 USD
View
9 more retailers have this diamond
Prices start from £1,739 GBPSave up to £2,320 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
1.50ct Round
£1,739 GBP