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Round|Natural|GIA

1.50ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5553557315

Certificate GIA 5553557315

Diamond specifications and retailer prices

From £4,003 GBP
SGD 7,248 SGD
As of October 31, 2026
Save £4,504 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £8,507 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 5553557315. Listed at 16 retailers as of October 26, 2026, with prices from £4,003 to £8,507, a £4,504 spread on the same certified stone. Wholesale Diamonds Direct lists it at £8,507. 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5553557315
Dimensions7.23 × 7.28 × 4.55 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.23 mm7.28 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553557315
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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: £4,536 GBP|Low: £4,003 GBP|High: £8,507 GBP|Avg: £5,403 GBP|-9.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
October 31, 2026
Retailer 4£4,003 GBP
Retailer 9£4,048 GBP
Retailer 11£4,166 GBP
Retailer 6£4,235 GBP
Retailer 8£4,288 GBP
Retailer 7£4,332 GBP
Retailer 1£4,536 GBP
Retailer 12£5,055 GBP
Retailer 2£5,078 GBP
Retailer 5£5,120 GBP
Retailer 3£6,571 GBP
Retailer 10£6,898 GBP
Wholesale Diamonds Direct£7,444 GBP

35 data points across 13 retailers

16 retailers£4,003 GBP to £8,507 GBP

A
Cheapest Retailer
-
£4,003 GBP
SGD 7,248 SGD
A
Retailer 2
-
£4,048 GBP
$5,424 USD
View
A
Retailer 3
-
£4,166 GBP
SGD 7,544 SGD
View
A
Retailer 4
-
£4,235 GBP
$5,675 USD
View
A
Retailer 5
-
£4,288 GBP
$5,745 USD
View
A
Retailer 6
-
£4,332 GBP
$5,804 USD
View
A
Retailer 7
-
£4,536 GBP
View
A
Retailer 8
-
£5,055 GBP
$6,773 USD
View
A
Retailer 9
-
£5,078 GBP
$6,804 USD
View
A
Retailer 10
-
£5,120 GBP
€6,534 EUR
View
B+
Retailer 11
-
£5,766 GBP
$7,726 USD
View
B+
Retailer 12
-
£6,571 GBP
$8,805 USD
View
B+
Retailer 13
-
£6,898 GBP
$9,242 USD
View
B+
Retailer 14
-
£7,444 GBP
$9,974 USD
View
B
Retailer 15
-
£7,784 GBP
$10,430 USD
View
Most Expensive
B
Wholesale Diamonds Direct
550937395 · Oct 26
£8,507 GBP
$11,399 USD
View
15 more retailers have this diamond
Prices start from £4,003 GBPSave up to £4,504 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
£4,003 GBP