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Round|Natural|GIA

1.50ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6521025685

Certificate GIA 6521025685

Diamond specifications and retailer prices

From £4,250 GBP
$5,694 USD
As of October 31, 2026
Save £5,303 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £9,552 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521025685. Listed at 18 retailers as of October 30, 2026, with prices from £4,250 to £9,552, a £5,303 spread on the same certified stone. NZ Jewellers lists it at £9,552. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521025685
Dimensions7.31 × 7.27 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.31 mm7.27 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521025685
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: £7,959 GBP|Low: £4,142 GBP|High: £8,055 GBP|Avg: £5,561 GBP|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7£4,250 GBP
Retailer 5£4,318 GBP
Retailer 6£4,775 GBP
Retailer 4£4,776 GBP
Retailer 2£5,348 GBP
Retailer 3£5,919 GBP
Retailer 8£6,293 GBP
Retailer 1£7,959 GBP

40 data points across 8 retailers

18 retailers£4,250 GBP to £9,552 GBP

A
Cheapest Retailer
-
£4,250 GBP
$5,694 USD
A
Retailer 2
-
£4,311 GBP
$5,776 USD
View
Retailer 3
-
£4,318 GBP
$5,785 USD
View
Price last confirmed 11 days ago
A
Retailer 4
-
£4,512 GBP
$6,046 USD
View
B+
Retailer 5
-
£4,775 GBP
$6,398 USD
View
Final sale: no returns
A
Retailer 6
-
£4,776 GBP
$6,399 USD
View
B+
Retailer 7
-
£5,088 GBP
$6,817 USD
View
B+
Retailer 8
-
£5,174 GBP
$6,933 USD
View
B+
Retailer 9
-
£5,253 GBP
$7,039 USD
View
B+
Retailer 10
-
£5,348 GBP
View
B+
Retailer 11
-
£5,650 GBP
$7,570 USD
View
B+
Retailer 12
-
£5,650 GBP
$7,570 USD
View
B+
Retailer 13
-
£5,836 GBP
$7,820 USD
View
B+
Retailer 14
-
£5,919 GBP
€7,553 EUR
View
B+
Retailer 15
-
£5,970 GBP
$7,999 USD
View
Retailer 16
-
£6,293 GBP
$8,432 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
£7,959 GBP
View
Most Expensive
B
NZ Jewellers
57a3d89b-bc2c-4776-b3ea-1270dab81dc9 · Oct 30
£9,552 GBP
$12,799 USD
View
17 more retailers have this diamond
Prices start from £4,250 GBPSave up to £5,303 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
£4,250 GBP