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Round|Natural|GIA

1.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 3555882902

Certificate GIA 3555882902

Diamond specifications and retailer prices

From £1,545 GBP
As of November 5, 2026
Save £4,524 GBP (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £6,069 GBP at NZ Jewellers · As of November 2, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555882902. Listed at 13 retailers as of November 2, 2026, with prices from £1,545 to £6,069, a £4,524 spread on the same certified stone. NZ Jewellers lists it at £6,069. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 3555882902
Dimensions7.24 × 7.29 × 4.56 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.24 mm7.29 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555882902
Side View
Table 58.0%Crown 36°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £6,069 GBP|Low: £1,467 GBP|High: £6,098 GBP|Avg: £2,516 GBP|-0.5%
NZ Jewellers
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
November 5, 2026
Retailer 6£1,467 GBP
Retailer 2£1,545 GBP
Retailer 12£1,897 GBP
Retailer 4£2,100 GBP
Retailer 11£2,246 GBP
Retailer 13£2,262 GBP
Retailer 3£2,346 GBP
Retailer 7£2,430 GBP
Retailer 5£2,941 GBP
Retailer 9£3,156 GBP
Retailer 14£3,212 GBP
Retailer 8£3,483 GBP
Retailer 10£3,483 GBP
NZ Jewellers£6,069 GBP

30 data points across 14 retailers

13 retailers£1,545 GBP to £6,069 GBP

A
Cheapest Retailer
-
£1,545 GBP
A
Retailer 2
-
£1,897 GBP
View
A
Retailer 3
-
£2,100 GBP
View
A
Retailer 4
-
£2,246 GBP
View
A
Retailer 5
-
£2,262 GBP
View
A
Retailer 6
-
£2,346 GBP
View
A
Retailer 7
-
£2,430 GBP
View
B+
Retailer 8
-
£2,941 GBP
View
B+
Retailer 9
-
£3,156 GBP
View
B+
Retailer 10
-
£3,212 GBP
View
B+
Retailer 11
-
£3,483 GBP
View
B+
Retailer 12
-
£3,483 GBP
View
Most Expensive
B
NZ Jewellers
17da86bd-d81d-4784-8543-95fe10cd3d01 · Nov 2
£6,069 GBP
$8,168 USD
View
12 more retailers have this diamond
Prices start from £1,545 GBPSave up to £4,524 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
£1,545 GBP