Radiant|Natural|GIA

1.70ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 2544348939

Certificate GIA 2544348939

Diamond specifications and retailer prices

From £6,436 GBP
As of November 5, 2026
Save £1,216 GBP (16%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £12,430 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2544348939. Listed at 20 retailers as of November 5, 2026, with a relatively tight 19% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.70
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2544348939
Dimensions7.91 × 6.09 × 4.18 mm
L/W Ratio1.30
Top View
7.91 mm6.09 mm1.70 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2544348939
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £12,430 GBP|Low: £5,819 GBP|High: £12,430 GBP|Avg: £7,557 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
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 9£5,819 GBP
Retailer 4£6,179 GBP
Retailer 5£6,215 GBP
Retailer 12£6,267 GBP
Retailer 20£6,436 GBP
Retailer 10£6,624 GBP
Retailer 6£6,733 GBP
Retailer 2£6,861 GBP
Retailer 18£6,869 GBP
Retailer 13£6,901 GBP
Retailer 15£7,074 GBP
Retailer 14£7,124 GBP
Retailer 21£7,124 GBP
Retailer 8£7,612 GBP
Retailer 3£7,653 GBP
Retailer 7£7,769 GBP
Retailer 16£8,077 GBP
Retailer 11£8,182 GBP
Retailer 19£8,969 GBP
Retailer 17£10,371 GBP
NZ Jewellers£12,430 GBP

31 data points across 21 retailers

20 retailers£6,436 GBP to £7,653 GBP

Retailer 1
-
£5,819 GBP
Price last confirmed 12 days ago
Retailer 2
-
£6,179 GBP
View
Price last confirmed 10 days ago
Retailer 3
-
£6,215 GBP
View
Price last confirmed 13 days ago
Retailer 4
-
£6,267 GBP
View
Price last confirmed 11 days ago
B+
Retailer 5
-
£6,436 GBP
View
Retailer 6
-
£6,624 GBP
View
Price last confirmed 13 days ago
Retailer 7
-
£6,733 GBP
View
Price last confirmed 12 days ago
B+
Retailer 8
-
£6,861 GBP
View
Retailer 9
-
£6,869 GBP
View
Price last confirmed 15 days ago
Retailer 10
-
£6,901 GBP
View
Price last confirmed 10 days ago
Retailer 11
-
£7,124 GBP
View
Price last confirmed 38 days ago
B
Retailer 12
-
£7,124 GBP
View
Retailer 13
-
£7,612 GBP
View
Price last confirmed 11 days ago
B
Retailer 14
-
£7,653 GBP
View
Retailer 15
-
£7,769 GBP
View
Price last confirmed 11 days ago
Retailer 16
-
£8,077 GBP
View
Price last confirmed 11 days ago
Retailer 17
-
£8,182 GBP
View
Price last confirmed 15 days ago
Retailer 18
-
£8,969 GBP
View
Price last confirmed 16 days ago
Retailer 19
-
£10,371 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
7c9043b3-cb7d-40e0-b973-b8bff0fafadc · Oct 27
£12,430 GBP
$16,638 USD
View
Price last confirmed 10 days ago
19 more retailers have this diamond
Prices start from £6,436 GBPSave up to £1,216 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+
1.70ct Radiant
£6,436 GBP