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Radiant|Natural|GIA

1.70ct F SI2 Radiant Natural Diamond

EX • F/SI2 • GIA 6551511116

Certificate GIA 6551511116

Diamond specifications and retailer prices

From £5,412 GBP
SGD 9,799 SGD
As of October 31, 2026
Save £617 GBP (10%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £10,290 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551511116. Listed at 10 retailers as of October 31, 2026, with a relatively tight 11% 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551511116
Dimensions8.21 × 6.13 × 4.14 mm
L/W Ratio1.34
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
8.21 mm6.13 mm1.70 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551511116
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.6%

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: Oct 31
Current: £5,412 GBP|Low: £4,585 GBP|High: £9,080 GBP|Avg: £6,073 GBP|+0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 13, 2026
Retailer 2£4,585 GBP
Retailer 8£4,949 GBP
Retailer 3£5,206 GBP
Retailer 12£5,274 GBP
Retailer 1£5,412 GBP
Retailer 13£5,577 GBP
Retailer 11£5,680 GBP
Retailer 9£5,850 GBP
Retailer 5£6,029 GBP
Retailer 4£6,283 GBP
Retailer 6£6,661 GBP
Retailer 10£8,677 GBP
Retailer 7£9,080 GBP

19 data points across 13 retailers

10 retailers£5,412 GBP to £6,029 GBP

Retailer 1
-
£4,585 GBP
HK$48,000 HKD
Price last confirmed 30 days ago
Retailer 2
-
£5,274 GBP
SGD 9,550 SGD
View
Price last confirmed 30 days ago
A
Retailer 3
-
£5,412 GBP
SGD 9,799 SGD
View
B+
Retailer 4
-
£6,029 GBP
A$12,428 AUD
View
Retailer 5
-
£6,153 GBP
$8,244 USD
View
Price last confirmed 31 days ago
Retailer 6
-
£6,248 GBP
$8,371 USD
View
Price last confirmed 32 days ago
Retailer 7
-
£7,099 GBP
$9,512 USD
View
Price last confirmed 34 days ago
Retailer 8
-
£8,677 GBP
View
Price last confirmed 32 days ago
Retailer 9
-
£9,080 GBP
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
5a224694-c765-4bb5-b3b2-78268a84c4e3 · Sep 30
£10,290 GBP
$13,788 USD
View
Price last confirmed 32 days ago
9 more retailers have this diamond
Prices start from £5,412 GBPSave up to £617 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
£5,412 GBP