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Round|Natural|GIA

1.50ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6552881090

Certificate GIA 6552881090

Diamond specifications and retailer prices

From £5,456 GBP
$7,310 USD
As of November 1, 2026
Save £6,580 GBP (55%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £12,036 GBP at NZ Jewellers · As of October 27, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552881090. Listed at 26 retailers as of October 27, 2026, with prices from £5,456 to £12,036, a £6,580 spread on the same certified stone. NZ Jewellers lists it at £12,036. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6552881090
Dimensions7.27 × 7.30 × 4.57 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
7.27 mm7.30 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552881090
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 1
Current: £7,089 GBP|Low: £5,246 GBP|High: £10,149 GBP|Avg: £7,099 GBP|+7.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 14£5,635 GBP
Retailer 12£5,771 GBP
Retailer 15£5,989 GBP
Retailer 2£6,413 GBP
Retailer 10£6,647 GBP
Retailer 13£6,677 GBP
Retailer 1£7,089 GBP
Retailer 3£7,135 GBP
Retailer 5£7,135 GBP
Retailer 7£7,292 GBP
Retailer 6£7,374 GBP
Retailer 8£7,445 GBP
Retailer 4£7,923 GBP
Retailer 11£8,684 GBP
Retailer 9£10,042 GBP

42 data points across 15 retailers

26 retailers£5,456 GBP to £12,036 GBP

B+
Cheapest Retailer
-
£5,456 GBP
$7,310 USD
B+
Retailer 2
-
£5,620 GBP
A$11,585 AUD
View
B+
Retailer 3
-
£5,635 GBP
$7,550 USD
View
B+
Retailer 4
-
£5,771 GBP
$7,732 USD
View
Final sale: no returns
B+
Retailer 5
-
£5,794 GBP
$7,764 USD
View
B+
Retailer 6
-
£5,913 GBP
CA$11,004 CAD
View
B+
Retailer 7
-
£5,989 GBP
$8,025 USD
View
Retailer 8
-
£6,018 GBP
$8,063 USD
View
Price last confirmed 7 days ago
Retailer 9
-
£6,413 GBP
$8,593 USD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£6,519 GBP
$8,735 USD
View
Retailer 11
-
£6,620 GBP
$8,870 USD
View
Price last confirmed 7 days ago
Retailer 12
-
£6,647 GBP
A$13,703 AUD
View
Price last confirmed 9 days ago
B
Retailer 13
-
£6,677 GBP
$8,946 USD
View
B+
Retailer 14
-
£6,915 GBP
$9,266 USD
View
B+
Retailer 15
-
£7,089 GBP
View
B+
Retailer 16
-
£7,135 GBP
$9,560 USD
View
B+
Retailer 17
-
£7,135 GBP
$9,560 USD
View
B+
Retailer 18
-
£7,292 GBP
$9,770 USD
View
B+
Retailer 19
-
£7,374 GBP
$9,880 USD
View
B+
Retailer 20
-
£7,445 GBP
€9,500 EUR
View
B
Retailer 21
-
£7,522 GBP
$10,079 USD
View
B
Retailer 22
-
£7,678 GBP
$10,288 USD
View
Retailer 23
-
£7,923 GBP
$10,616 USD
View
Price last confirmed 9 days ago
Retailer 24
-
£8,684 GBP
ZAR 187,985 ZAR
View
Price last confirmed 10 days ago
B
Retailer 25
-
£10,042 GBP
View
Most Expensive
B
NZ Jewellers
4464d239-44b9-4c6f-8d44-4a71a19c56fa · Oct 27
£12,036 GBP
$16,127 USD
View
25 more retailers have this diamond
Prices start from £5,456 GBPSave up to £6,580 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+
1.50ct Round
£5,456 GBP