CaratHunter
Plans
Marquise|Natural|GIA

1.00ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6555978887

Certificate GIA 6555978887

Diamond specifications and retailer prices

From HK$17,877 HKD
As of November 1, 2026
Save HK$22,729 HKD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$49,603 HKD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H 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 6555978887. Listed at 20 retailers as of October 28, 2026, with a 127% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555978887
Dimensions9.79 × 5.29 × 3.29 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Natural
Top View
9.79 mm5.29 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555978887
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.2%

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: Nov 1
Current: HK$18,700 HKD|Low: HK$17,676 HKD|High: HK$40,755 HKD|Avg: HK$26,216 HKD|-3.0%
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
November 2, 2026
Retailer 9HK$17,877 HKD
Retailer 1HK$18,700 HKD
Retailer 2HK$20,815 HKD
Retailer 13HK$21,208 HKD
Retailer 3HK$21,898 HKD
Retailer 4HK$24,847 HKD
Retailer 5HK$24,850 HKD
Retailer 6HK$25,159 HKD
Retailer 12HK$27,324 HKD
Retailer 10HK$27,772 HKD
Retailer 8HK$29,165 HKD
Retailer 7HK$39,679 HKD
Retailer 11HK$40,606 HKD

26 data points across 13 retailers

20 retailersHK$17,877 HKD to HK$40,606 HKD

A
Cheapest Retailer
-
HK$17,877 HKD
A
Retailer 2
-
HK$18,700 HKD
₹226,980 INR
View
A
Retailer 3
-
HK$20,815 HKD
SGD 3,585 SGD
View
B+
Retailer 4
-
HK$21,208 HKD
$2,703 USD
View
B+
Retailer 5
-
HK$21,898 HKD
$2,791 USD
View
Final sale: no returns
B+
Retailer 6
-
HK$22,212 HKD
$2,831 USD
View
B+
Retailer 7
-
HK$22,244 HKD
$2,835 USD
View
Retailer 8
-
HK$23,727 HKD
$3,024 USD
View
Price last confirmed 17 days ago
Retailer 9
-
HK$23,727 HKD
$3,024 USD
View
Price last confirmed 15 days ago
Retailer 10
-
HK$24,637 HKD
$3,140 USD
View
Price last confirmed 16 days ago
B+
Retailer 11
-
HK$24,847 HKD
$3,167 USD
View
B+
Retailer 12
-
HK$24,850 HKD
SGD 4,280 SGD
View
B+
Retailer 13
-
HK$25,159 HKD
£2,525 GBP
View
Retailer 14
-
HK$25,457 HKD
A$4,992 AUD
View
Price last confirmed 25 days ago
Retailer 15
-
HK$27,375 HKD
$3,489 USD
View
Price last confirmed 14 days ago
B
Retailer 16
-
HK$27,772 HKD
€3,371 EUR
View
B+
Retailer 17
-
HK$29,165 HKD
ZAR 60,050 ZAR
View
B
Retailer 18
-
HK$39,679 HKD
£3,982 GBP
View
B
Retailer 19
-
HK$40,606 HKD
£4,075 GBP
View
Most Expensive
NZ Jewellers
6cdd9434-35a4-44a2-ba4e-55c626e8c816 · Oct 17
HK$49,603 HKD
$6,322 USD
View
Price last confirmed 15 days ago
19 more retailers have this diamond
Prices start from HK$17,877 HKDSave up to HK$22,729 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
1.00ct Marquise
HK$17,877 HKD