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Marquise|Natural|GIA

1.21ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 1558196256

Certificate GIA 1558196256

Diamond specifications and retailer prices

From HK$40,323 HKD
As of November 5, 2026
Save HK$10,172 HKD (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$50,496 HKD at 77 Diamonds · As of November 7, 2026
View at 77 Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558196256. Listed at 3 retailers as of November 5, 2026, with prices from HK$40,323 to HK$50,496, a HK$10,172 spread on the same certified stone. 77 Diamonds lists it at HK$50,496. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.51°
Pavilion angle41.34°
OriginNatural
Grading LabGIA
CertificateGIA 1558196256
Dimensions9.88 × 5.41 × 3.63 mm
L/W Ratio1.83
Culet sizeNone
Top View
9.88 mm5.41 mm1.21 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558196256
Side View
Table 64.0%Crown 41.51°Girdle: STK-VTKPavilion 41.34°Culet: NoneDepth 67.0%

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 5
Current: HK$50,496 HKD|Low: HK$21,647 HKD|High: HK$52,236 HKD|Avg: HK$37,569 HKD|+1.1%
77 Diamonds
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 7, 2026
Retailer 3HK$21,647 HKD
Retailer 10HK$29,508 HKD
Retailer 7HK$30,785 HKD
Retailer 12HK$31,726 HKD
Retailer 5HK$34,696 HKD
Retailer 8HK$36,718 HKD
Retailer 13HK$36,757 HKD
Retailer 11HK$37,055 HKD
Retailer 6HK$40,323 HKD
Retailer 2HK$46,883 HKD
Retailer 9HK$48,035 HKD
77 DiamondsHK$50,496 HKD
Retailer 4HK$52,236 HKD

36 data points across 13 retailers

3 retailersHK$40,323 HKD to HK$50,496 HKD

B
Cheapest Retailer
-
HK$40,323 HKD
C
Retailer 2
-
HK$46,883 HKD
View
Most Expensive
C
77 Diamonds
MQMBY8VBCHFH · Nov 7
HK$50,496 HKD
£5,073 GBP
View
2 more retailers have this diamond
Prices start from HK$40,323 HKDSave up to HK$10,172 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
1.21ct Marquise
HK$40,323 HKD