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Cushion|Natural|GIA

1.70ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 2558551556

Certificate GIA 2558551556

Diamond specifications and retailer prices

From HK$42,082 HKD
As of October 29, 2026
Save HK$48,400 HKD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$90,482 HKD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion sits in the one-and-a-half to two carat band, graded E 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 2558551556. Listed at 15 retailers as of October 28, 2026, with prices from HK$42,082 to HK$90,482, a HK$48,400 spread on the same certified stone. Queensmith lists it at HK$90,482. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558551556
Dimensions7.88 × 6.07 × 4.22 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cavity, Feather, Cloud, Needle
Top View
7.88 mm6.07 mm1.70 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558551556
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.4%

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 29
Current: HK$90,482 HKD|Low: HK$42,082 HKD|High: HK$91,079 HKD|Avg: HK$58,779 HKD|+2.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 10HK$42,082 HKD
Retailer 5HK$45,265 HKD
Retailer 4HK$49,969 HKD
Retailer 12HK$52,226 HKD
Retailer 9HK$52,233 HKD
Retailer 6HK$53,631 HKD
Retailer 2HK$54,098 HKD
Retailer 3HK$57,856 HKD
Retailer 11HK$58,777 HKD
Retailer 7HK$61,733 HKD
Retailer 8HK$78,972 HKD
QueensmithHK$90,482 HKD

24 data points across 12 retailers

15 retailersHK$42,082 HKD to HK$90,482 HKD

A
Cheapest Retailer
-
HK$42,082 HKD
A
Retailer 2
-
HK$45,265 HKD
₹549,418 INR
View
A
Retailer 3
-
HK$48,698 HKD
SGD 8,387 SGD
View
Price last confirmed 14 days ago
A
Retailer 4
-
HK$49,969 HKD
SGD 8,606 SGD
View
B+
Retailer 5
-
HK$51,951 HKD
$6,621 USD
View
B+
Retailer 6
-
HK$52,226 HKD
$6,656 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$52,233 HKD
$6,657 USD
View
A
Retailer 8
-
HK$53,631 HKD
£5,382 GBP
View
A
Retailer 9
-
HK$54,098 HKD
£5,429 GBP
View
B+
Retailer 10
-
HK$57,856 HKD
$7,374 USD
View
B+
Retailer 11
-
HK$58,489 HKD
A$11,468 AUD
View
B+
Retailer 12
-
HK$58,777 HKD
$7,491 USD
View
B+
Retailer 13
-
HK$61,733 HKD
€7,493 EUR
View
B+
Retailer 14
-
HK$78,972 HKD
£7,925 GBP
View
Most Expensive
B
Queensmith
2558551556 · Oct 28
HK$90,482 HKD
£9,080 GBP
View
14 more retailers have this diamond
Prices start from HK$42,082 HKDSave up to HK$48,400 HKD

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 Cushion
HK$42,082 HKD