Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 5232708673

Certificate GIA 5232708673

Diamond specifications and retailer prices

From $15,850 AUD
$11,134 USD
As of October 30, 2026
Save $5,361 AUD (25%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $21,212 AUD at Jared · As of October 30, 2026
View at Jared

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded E 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 5232708673. Listed at 10 retailers as of October 30, 2026, with prices from $15,850 to $21,212, a $5,361 spread on the same certified stone. Jared lists it at $21,212. 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

1.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5232708673
Dimensions10.67 × 6.05 × 3.82 mm
L/W Ratio1.76
Top View
10.67 mm6.05 mm1.51 ctE / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5232708673
Side View
Table 61.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 63.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $21,027 AUD|Low: $15,738 AUD|High: $21,342 AUD|Avg: $18,251 AUD|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 6$15,850 AUD
Retailer 2$15,885 AUD
Retailer 3$16,713 AUD
Retailer 4$17,203 AUD
Retailer 5$19,630 AUD
Retailer 1$21,027 AUD
Retailer 7$21,334 AUD

33 data points across 7 retailers

10 retailers$15,850 AUD to $21,212 AUD

B+
Cheapest Retailer
-
$15,850 AUD
$11,134 USD
B+
Retailer 2
-
$15,885 AUD
$11,158 USD
View
B+
Retailer 3
-
$16,713 AUD
$11,740 USD
View
B+
Retailer 4
-
$16,942 AUD
View
B+
Retailer 5
-
$17,203 AUD
$12,084 USD
View
B
Retailer 6
-
$19,630 AUD
$13,789 USD
View
B
Retailer 7
-
$20,528 AUD
$14,420 USD
View
B
Retailer 8
-
$20,528 AUD
$14,420 USD
View
B
Retailer 9
-
$21,027 AUD
£11,630 GBP
View
Most Expensive
B
Jared
156258354 · Oct 30
$21,212 AUD
$14,900 USD
View
9 more retailers have this diamond
Prices start from $15,850 AUDSave up to $5,361 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+
1.51ct Marquise
$15,850 AUD