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Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 6481495491

Certificate GIA 6481495491

Diamond specifications and retailer prices

From £2,738 GBP
HK$28,700 HKD
As of November 1, 2026
Save £3,807 GBP (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £6,544 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6481495491. Listed at 23 retailers as of October 28, 2026, with prices from £2,738 to £6,544, a £3,807 spread on the same certified stone. Queensmith lists it at £6,544. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6481495491
Dimensions7.39 × 5.62 × 4.00 mm
L/W Ratio1.31
Top View
7.39 mm5.62 mm1.50 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6481495491
Side View
Table 72.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.1%

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: Nov 1
Current: £6,544 GBP|Low: £2,738 GBP|High: £6,568 GBP|Avg: £4,186 GBP|+2.5%
Queensmith
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
November 2, 2026
Retailer 15£2,738 GBP
Retailer 2£3,031 GBP
Retailer 7£3,148 GBP
Retailer 6£3,268 GBP
Retailer 8£3,403 GBP
Retailer 10£3,474 GBP
Retailer 12£3,667 GBP
Retailer 3£3,687 GBP
Retailer 16£3,687 GBP
Retailer 17£3,687 GBP
Retailer 9£3,717 GBP
Retailer 11£4,172 GBP
Retailer 5£4,254 GBP
Retailer 14£4,532 GBP
Retailer 13£5,872 GBP
Retailer 4£6,424 GBP
Queensmith£6,544 GBP

28 data points across 17 retailers

23 retailers£2,738 GBP to £6,544 GBP

A
Cheapest Retailer
-
£2,738 GBP
HK$28,700 HKD
A
Retailer 2
-
£3,031 GBP
₹387,412 INR
View
A
Retailer 3
-
£3,148 GBP
$4,225 USD
View
A
Retailer 4
-
£3,215 GBP
$4,315 USD
View
A
Retailer 5
-
£3,268 GBP
$4,385 USD
View
B+
Retailer 6
-
£3,302 GBP
A$6,817 AUD
View
B+
Retailer 7
-
£3,403 GBP
$4,567 USD
View
Final sale: no returns
B+
Retailer 8
-
£3,473 GBP
$4,660 USD
View
A
Retailer 9
-
£3,474 GBP
View
B+
Retailer 10
-
£3,555 GBP
$4,771 USD
View
A
Retailer 11
-
£3,667 GBP
View
B+
Retailer 12
-
£3,687 GBP
$4,948 USD
View
B+
Retailer 13
-
£3,687 GBP
$4,948 USD
View
B+
Retailer 14
-
£3,687 GBP
$4,948 USD
View
Retailer 15
-
£3,717 GBP
A$7,674 AUD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
£3,800 GBP
$5,099 USD
View
B+
Retailer 17
-
£4,172 GBP
€5,332 EUR
View
B+
Retailer 18
-
£4,254 GBP
$5,709 USD
View
Retailer 19
-
£4,254 GBP
$5,709 USD
View
Price last confirmed 10 days ago
B+
Retailer 20
-
£4,532 GBP
ZAR 98,258 ZAR
View
B
Retailer 21
-
£5,872 GBP
View
B
Retailer 22
-
£6,424 GBP
$8,621 USD
View
Most Expensive
B
Queensmith
6481495491 · Oct 28
£6,544 GBP
View
22 more retailers have this diamond
Prices start from £2,738 GBPSave up to £3,807 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 Radiant
£2,738 GBP