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Radiant|Natural|GIA

1.70ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 7562198419

Certificate GIA 7562198419

Diamond specifications and retailer prices

From £4,236 GBP
As of November 5, 2026
Save £785 GBP (16%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £9,278 GBP at NZ Jewellers · As of September 30, 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 7562198419. Listed at 18 retailers as of November 4, 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7562198419
Dimensions9.01 × 5.62 × 3.86 mm
L/W Ratio1.60
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
9.01 mm5.62 mm1.70 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7562198419
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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: £4,236 GBP|Low: £4,213 GBP|High: £7,950 GBP|Avg: £5,805 GBP|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 1£4,236 GBP
Retailer 3£4,465 GBP
Retailer 4£5,304 GBP
Retailer 8£5,460 GBP
Retailer 9£5,686 GBP
Retailer 11£5,686 GBP
Retailer 10£5,872 GBP
Retailer 6£6,138 GBP
Retailer 2£6,200 GBP
Retailer 7£6,850 GBP
Retailer 5£7,883 GBP

40 data points across 11 retailers

18 retailers£4,236 GBP to £5,021 GBP

Retailer 1
-
£4,131 GBP
Price last confirmed 30 days ago
A
Retailer 2
-
£4,236 GBP
View
Retailer 3
-
£4,749 GBP
View
Price last confirmed 34 days ago
B+
Retailer 4
-
£5,021 GBP
View
Retailer 5
-
£5,024 GBP
View
Price last confirmed 7 days ago
Retailer 6
-
£5,304 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£5,460 GBP
View
Price last confirmed 16 days ago
Retailer 8
-
£5,547 GBP
View
Price last confirmed 37 days ago
Retailer 9
-
£5,579 GBP
View
Price last confirmed 9 days ago
Retailer 10
-
£5,632 GBP
View
Price last confirmed 38 days ago
Retailer 11
-
£5,686 GBP
View
Price last confirmed 8 days ago
Retailer 12
-
£5,686 GBP
View
Price last confirmed 8 days ago
Retailer 13
-
£5,872 GBP
View
Price last confirmed 8 days ago
Retailer 14
-
£6,138 GBP
View
Price last confirmed 9 days ago
Retailer 15
-
£6,401 GBP
View
Price last confirmed 39 days ago
Retailer 16
-
£6,850 GBP
View
Price last confirmed 11 days ago
Retailer 17
-
£7,883 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
1d15cba9-4064-4a2e-907e-3d766e424337 · Sep 30
£9,278 GBP
$12,419 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from £4,236 GBPSave up to £785 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
1.70ct Radiant
£4,236 GBP