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Marquise|Natural|GIA

1.21ct F SI1 Marquise Natural Diamond

VG • F/SI1 • GIA 2556036557

Certificate GIA 2556036557

Diamond specifications and retailer prices

From $8,124 AUD
As of November 5, 2026
Save $1,396 AUD (15%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $15,053 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556036557. Listed at 8 retailers as of November 5, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2556036557
Dimensions10.21 × 5.50 × 3.60 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.21 mm5.50 mm1.21 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2556036557
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.4%

Caratlytics Score

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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: $15,053 AUD|Low: $7,110 AUD|High: $15,053 AUD|Avg: $9,600 AUD
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
Retailer 18
Retailer 19
October 19, 2026
Retailer 11$7,110 AUD
Retailer 4$7,165 AUD
Retailer 10$7,590 AUD
Retailer 8$7,626 AUD
Retailer 2$8,124 AUD
Retailer 5$8,153 AUD
Retailer 19$8,153 AUD
Retailer 12$8,568 AUD
Retailer 16$8,670 AUD
Retailer 15$8,875 AUD
Retailer 14$8,885 AUD
Retailer 6$9,408 AUD
Retailer 13$9,520 AUD
Retailer 18$9,630 AUD
Retailer 7$9,926 AUD
Retailer 3$10,827 AUD
Retailer 17$13,419 AUD
Retailer 9$13,567 AUD
NZ Jewellers$15,053 AUD

10 data points across 19 retailers

8 retailers$8,124 AUD to $9,520 AUD

B
Cheapest Retailer
-
$8,124 AUD
Retailer 2
-
$8,153 AUD
View
Price last confirmed 40 days ago
B
Retailer 3
-
$8,568 AUD
View
Retailer 4
-
$8,875 AUD
View
Price last confirmed 38 days ago
Retailer 5
-
$9,408 AUD
View
Price last confirmed 39 days ago
B
Retailer 6
-
$9,520 AUD
View
Retailer 7
-
$10,827 AUD
View
Price last confirmed 43 days ago
Most Expensive
NZ Jewellers
34bfa772-b0ea-497b-bc59-1fffa3d0ad68 · Sep 30
$15,053 AUD
$10,343 USD
View
Price last confirmed 37 days ago
7 more retailers have this diamond
Prices start from $8,124 AUDSave up to $1,396 AUD

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
$8,124 AUD