Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1558052400

Certificate GIA 1558052400

Diamond specifications and retailer prices

From HK$27,257 HKD
$3,474 USD
As of November 1, 2026
Save HK$7,008 HKD (20%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$49,634 HKD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-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 1558052400. Listed at 16 retailers as of November 1, 2026, with a 26% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558052400
Dimensions9.99 × 5.30 × 3.09 mm
L/W Ratio1.88
Culet sizeNone
Top View
9.99 mm5.30 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558052400
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.2%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$49,634 HKD|Low: HK$22,911 HKD|High: HK$49,634 HKD|Avg: HK$30,343 HKD
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
November 1, 2026
Retailer 17HK$22,911 HKD
Retailer 3HK$23,483 HKD
Retailer 5HK$24,990 HKD
Retailer 7HK$25,806 HKD
Retailer 16HK$25,806 HKD
Retailer 15HK$26,802 HKD
Retailer 10HK$27,257 HKD
Retailer 12HK$27,779 HKD
Retailer 4HK$29,266 HKD
Retailer 8HK$29,776 HKD
Retailer 6HK$30,515 HKD
Retailer 9HK$32,263 HKD
Retailer 13HK$33,110 HKD
Retailer 2HK$34,265 HKD
Retailer 11HK$34,382 HKD
Retailer 14HK$47,900 HKD
NZ JewellersHK$49,634 HKD

34 data points across 17 retailers

16 retailersHK$27,257 HKD to HK$34,265 HKD

Retailer 1
-
HK$22,911 HKD
$2,920 USD
Price last confirmed 10 days ago
Retailer 2
-
HK$23,483 HKD
$2,993 USD
View
Price last confirmed 12 days ago
Retailer 3
-
HK$24,990 HKD
$3,185 USD
View
Price last confirmed 10 days ago
Retailer 4
-
HK$25,806 HKD
$3,289 USD
View
Price last confirmed 18 days ago
Retailer 5
-
HK$25,806 HKD
$3,289 USD
View
Price last confirmed 11 days ago
Retailer 6
-
HK$25,927 HKD
$3,304 USD
View
Price last confirmed 15 days ago
Retailer 7
-
HK$26,802 HKD
$3,416 USD
View
Price last confirmed 17 days ago
B
Retailer 8
-
HK$27,257 HKD
$3,474 USD
View
Retailer 9
-
HK$29,266 HKD
$3,730 USD
View
Price last confirmed 12 days ago
Retailer 10
-
HK$29,776 HKD
$3,795 USD
View
Price last confirmed 12 days ago
Retailer 11
-
HK$30,515 HKD
A$5,983 AUD
View
Price last confirmed 25 days ago
Retailer 12
-
HK$32,263 HKD
$4,112 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
HK$34,265 HKD
£3,439 GBP
View
Retailer 14
-
HK$34,382 HKD
ZAR 70,793 ZAR
View
Price last confirmed 11 days ago
Retailer 15
-
HK$47,900 HKD
£4,807 GBP
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
3217f459-345e-46b9-83f9-6e3898b8c971 · Oct 21
HK$49,634 HKD
$6,326 USD
View
Price last confirmed 13 days ago
15 more retailers have this diamond
Prices start from HK$27,257 HKDSave up to HK$7,008 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.

B
1.00ct Marquise
HK$27,257 HKD