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Round|Natural|GIA

1.50ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 2428351005

Certificate GIA 2428351005

Diamond specifications and retailer prices

From £3,000 GBP
HK$31,400 HKD
As of October 31, 2026
Save £3,822 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,821 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2428351005. Listed at 18 retailers as of October 30, 2026, with prices from £3,000 to £6,821, a £3,822 spread on the same certified stone. NZ Jewellers lists it at £6,821. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2428351005
Dimensions7.20 × 7.12 × 4.59 mm
L/W Ratio1.01
Top View
7.20 mm7.12 mm1.50 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2428351005
Side View
Table 57.0%Crown 38°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 64.1%

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: £6,821 GBP|Low: £2,953 GBP|High: £6,837 GBP|Avg: £4,159 GBP
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 11£3,000 GBP
Retailer 6£3,045 GBP
Retailer 18£3,153 GBP
Retailer 5£3,411 GBP
Retailer 9£3,470 GBP
Retailer 3£3,695 GBP
Retailer 10£3,695 GBP
Retailer 4£3,889 GBP
Retailer 2£3,954 GBP
Retailer 7£4,142 GBP
Retailer 16£4,142 GBP
Retailer 12£4,185 GBP
Retailer 8£4,264 GBP
Retailer 17£4,276 GBP
Retailer 13£4,425 GBP
Retailer 15£4,500 GBP
Retailer 14£6,532 GBP
NZ Jewellers£6,821 GBP

36 data points across 18 retailers

18 retailers£3,000 GBP to £6,821 GBP

A
Cheapest Retailer
-
£3,000 GBP
HK$31,400 HKD
A
Retailer 2
-
£3,045 GBP
$4,080 USD
View
Retailer 3
-
£3,153 GBP
$4,225 USD
View
Price last confirmed 13 days ago
B+
Retailer 4
-
£3,411 GBP
$4,570 USD
View
Final sale: no returns
B+
Retailer 5
-
£3,470 GBP
$4,650 USD
View
B+
Retailer 6
-
£3,695 GBP
$4,951 USD
View
B+
Retailer 7
-
£3,695 GBP
$4,951 USD
View
B+
Retailer 8
-
£3,889 GBP
$5,211 USD
View
B+
Retailer 9
-
£3,954 GBP
View
B+
Retailer 10
-
£4,142 GBP
$5,550 USD
View
B+
Retailer 11
-
£4,142 GBP
$5,550 USD
View
B+
Retailer 12
-
£4,185 GBP
€5,341 EUR
View
B+
Retailer 13
-
£4,264 GBP
$5,713 USD
View
B+
Retailer 14
-
£4,276 GBP
$5,730 USD
View
B+
Retailer 15
-
£4,425 GBP
View
Retailer 16
-
£4,500 GBP
$6,030 USD
View
Price last confirmed 8 days ago
B
Retailer 17
-
£6,532 GBP
View
Most Expensive
B
NZ Jewellers
714a9b61-9224-4925-ae64-248397bf7913 · Oct 30
£6,821 GBP
$9,140 USD
View
17 more retailers have this diamond
Prices start from £3,000 GBPSave up to £3,822 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
£3,000 GBP